Choose the underlined part that needs correcting

Ex 10: Choose the underlined part that needs correcting.
1. Will the climate still be in warning state after greenhouse emissions stopped ?
A. still be                B. warning             C. after              D. stopped
2. When a species of plants or animals are in danger of extinction , it is gradually  disappearing.
A. When                 B. species              C. are                D. it
3. Who is responsible when climate change harms the world's the poorest countries ?
A. is                        B. when                  C. harms           D. the poorest
4. When fossil fuels are burnt, they released greenhouse gases - mostly carbon dioxide.
A. When                  B. burnt                  C. released           D. mostly
5. We will contact the people in charge and will get back to you as soon as we could.
A. will contact           B. will get back            C. as soon as          D. could
6. Technology has a long way to go before it could make a large impact in the atmosphere.
A. has                    B. to go                     C. it could make           D. in
7. As soon as the snow will melt, spring wildflowers push their way up through the leaf litter.
A.As soon as             B. will melt             C. push                         D. litter